Yes. TPU you get for the week has little to do with what the week cost someone else in TPU. I get 18 TPU for one of my weeks that RCI has right now for 5 TPU.
We are in a period of time with a bad economy and fewer travelers (thus fewer $179's for RCI) and offering 18 TPU for a week they sell for 5 TPU is RCI's way of holding a torch under the whole "world of timeshare travel" to heat it up so they get more $179's. Pretty smart actually.
That's all it is - it is also the subject of a waaaayyyy overblown thread featuring Tombo and Carolinian going at it hammer and tong.